Search Space Monitoring for PCell Cross-Scheduling Capacity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The limited control channel capacity of the primary cell (PCell) in 5G NR systems, due to its deployment on low-band carriers with insufficient bandwidth, hinders effective scheduling and communication efficiency.
Innovation Solution
Implementing a search space monitoring method that configures multiple transmission objects for a terminal device, allowing for self-scheduling and cross-scheduling by other cells or TRPs, thereby enhancing the control channel capacity and communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the PCell is deployed on a low-band carrier to enhance coverage, then the coverage is improved, but the control channel capacity is limited due to insufficient bandwidth
Solution Approach 1:
The patent divides the control channel scheduling function into multiple segments: the PCell handles its own scheduling (self-scheduling) while secondary cells (SCells) handle scheduling for both themselves and the PCell (cross-scheduling). This segmentation allows the control channel capacity to be distributed across multiple cells, overcoming the bandwidth limitation of the low-band PCell while maintaining its coverage advantage.
Solution Approach 2:
The patent introduces SCells as intermediary entities that mediate the scheduling function. These SCells act as additional control channel resources that can schedule both their own data transmissions and the PCell's data transmissions, effectively expanding the overall control channel capacity without changing the PCell's low-band deployment.
2Quantity of substance
If multiple transmission objects are configured for cross-scheduling, then the control channel capacity is enhanced, but the device complexity increases
Solution Approach 1:
The patent implements dynamic scheduling configurations where the terminal device can be flexibly assigned to different search spaces based on which cell is performing the scheduling function. The search space configuration dynamically adapts to whether the PCell or an SCell is scheduling, allowing the system to optimize control channel usage while managing terminal device complexity through adaptive rather than static configurations.
Solution Approach 2:
The patent changes the parameters of search space monitoring based on the scheduling cell identity. When a different cell schedules a transmission object, the terminal device monitors a different search space with potentially different monitoring parameters. This parameter change approach allows multiple transmission objects to be scheduled without requiring the terminal to simultaneously monitor all possible search spaces, thereby managing complexity.
3Adaptability or versatility
If the PCell schedules itself and other cells, then the scheduling flexibility is improved, but the processing capability requirement increases
Solution Approach 1:
The patent segments the scheduling processing load across multiple cells. Instead of requiring the PCell to handle all scheduling decisions alone, the system divides scheduling responsibilities: the PCell schedules its own transmissions, while SCells schedule their own and can also schedule PCell transmissions. This segmentation distributes the processing capability requirements, reducing the burden on any single cell while maintaining overall scheduling flexibility.
Data Source
AI summary
A search space monitoring method and a device are disclosed. The method is executed by a terminal device, and a plurality of transmission objects are configured for the terminal device. The method includes: obtaining scheduling configuration information; and monitoring an SS based on the scheduling configuration information, where the SS includes an SS in which at least two transmission objects schedule one transmission object.